source code download the *.jar for using the applet on standalone without internet connection.

some known bugs,

text field fail to load in jar

some good features to have

now need to key in velocity u and angle of launch alpha and once initialize, the applet remembers the values making it easier to explore and use the applet. bad thing is now the starting is 0 or blank or empty, so newbies will be wondering what is wrong.

in 23 added event handlers to put the simulation back to when instant y = yground

replaced all text field into label since the EJS 4.1 Jan 2009 version does not support display of text field

redesigned with slider now instead of input field for better usability

A youtube video made to spread the news of learning by doing & exploring sense making physics.

Music is audio swapped by Youtube in built service. cool Grin I am assuming Youtube asked for permission already to use the music for youtube users.

I believe this is applicable to me. * * Tell me. I may not get it, I'm sure to forget it. * * Show me. I may get it, I'll remember it for a little while. * * Have me do it. I'll understand it, it may stick for awhile.

Ejs Intro 2DMotionLab Modelwritten by Anne Cox, Wolfgang Christian, and Mario BelloniThe Introductory Physics 2D (Projectile) Motion Lab program asks students to develop a model for a ball with projectile motion. It is distributed as a ready-to-run (compiled) Java archive. Double-clicking the ejs_intro_2DMotionLab.jar file will run the program if Java is installed. In order to modify this simulation (and see how it is designed), if you have Ejs installed, you can right-click within the simulation window and select Open Ejs Model from the pop-up menu. Information about Ejs (Easy Java Simulations) is available at: http://www.um.es/fem/Ejs/.

This Ejs Intro 2DMotionLab Model simulation is a template for students to input their own equations to model the physics of Ejs Intro 2DMotionLab Model. I like it 2

Wonderful,, now is very good I'm imagine it was hard work but i see now excllent simulation By the way i modified layout of simulation and post too on Ahmed's contributionAnd of course i will translate to portagesWonderful simulation

Of course i would it. with pleasure I believe that projects develop by EJS need to improve interface for we have the most beautiful layout And this guide us to improve projects no only from side of layout but also from side of physicsI mean give us more ideas.

add1 http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1832.0 another Fair = k*v + k2*v^2 to allow exploration of the v^2 model2 add of the projectile trail3 made all graphs Active _isPlaying so that the graphs are not connected is not active4 add range groundx= -vxinit/g*(vyinit+Math.sqrt((vyinit)*(vyinit)+2*g*(yground))); // http://en.wikipedia.org/wiki/Trajectory_of_a_projectile5 maximum height = - vyinit*vyinit/(2*g); //http://en.wikipedia.org/wiki/Trajectory6 time of flight tend = groundx/vxinit; //http://en.wikipedia.org/wiki/Trajectory7 set ball to always same size to the view of the applet8 // screen view so that it increases if needif(x < xmin ) xmin*=1.2;if(x > xmax) xmax*=1.2;if(y < ymin ) ymin*=1.2;if(y > ymax) ymax*=1.2;20 March 2011added better range for ymax, xmaxtook from up and down applet20 September 2011remove all the closet==true for the sliders for web deploy to worksaved as another name for the jar to load properlydialog is a panel and visible ==false